Church leaders are tasked with maintaining the purity of the church in this new covenant age (1 Cor. 5). This is accomplished by the careful practice of church discipline, which must lead finally to excommunication for those who remain impenitent. The ancient Israelites and Judahites did not maintain discipline and cast idolaters out of their midst, so God judged them. Our Creator will likewise hold churches accountable that fail to discipline their members appropriately.